Today in the bright sunshine , clear, dry roads of east brunswick around 2 pm the salt trucks were out in force putting down so much salt it looked like snow covered roads. Now how much of this salt is getting into the ground killing it. and why are we salting dry roads?

Not poking a stick ,but
1 you have no knowledge of what system you have in there
2 We cant comment on it because we cant see to inspect
3 natural gas or propane will blow up a house sky high
4 Not checking the flue or venting will lead to death from carbon monoxide gas
So the best advice we could give it to have the system inspected by a qualified tech

And here`s what a prisoner can put together in prison and you have to ask what the average person can do with an un-resistered CNC machine , drill press, hacksaw and files
https://en.wikipedia.org/wiki/David_Marshall_Williams#Movie_fame